Airworthiness Directive · Amendment 39-19511 · Turbine engine compressor section
Rolls-Royce plc Turbofan Engines
Superseded. A later AD replaced this one: AD 2019-16-14. Comply with the one in force.
This AD applies to all Rolls Royce plc (RR) Trent 1000-A, Trent 1000-C, Trent 1000-D, Trent 1000-E, Trent 1000-G, and Trent 1000-H turbofan engine models.
We are superseding airworthiness directive (AD) 2018-13-07 for all Rolls-Royce plc (RR) Trent 1000-A, Trent 1000-C, Trent 1000-D, Trent 1000-E, Trent 1000-G, and Trent 1000-H turbofan engine models. AD 2018-13-07 required initial inspections of the intermediate-pressure compressor (IPC) stage 1 rotor blades, IPC stage 2 rotor blades, and IPC shaft stage 2 dovetail posts, and removing any cracked parts from service. This AD requires initial inspections and adds repetitive inspections of the IPC stage 1 rotor blades, IPC stage 2 rotor blades, and IPC shaft stage 2 dovetail posts, and removing any cracked parts from service. This AD was prompted by the manufacturer determining the need for repetitive inspections of the IPC stage 1 rotor blades, IPC stage 2 rotor blades, and IPC shaft stage 2 dovetail posts. We are issuing this AD to address the unsafe condition on these products.
(1) Within 15 days of the effective date of this AD, or within the compliance times specified in Table 1 of RR Alert Non-Modification Service Bulletin (NMSB) Trent 1000 72-AK130, Revision 2, dated July 26, 2018, whichever occurs later, perform on-wing inspection of the IPC stage 1 rotor blades in accordance with paragraph 3.A.(1) of RR Alert NMSB Trent 1000 72-AK130.
(2) Repeat the on-wing inspection of the IPC stage 1 rotor blades in accordance with paragraph 3.A.(1) of RR Alert NMSB Trent 1000 72-AK130, Revision 2, dated July 26, 2018, and within the compliance times specified in Table 1 of that NMSB.
(3) Within 15 days of the effective date of this AD, or within the compliance times specified in Table 1 of RR Alert NMSB Trent 1000 72-AK130 Revision 2, dated July 26, 2018, whichever occurs later, perform on-wing inspection of the IPC stage 2 rotor blades and IPC shaft stage 2 dovetail posts in accordance with paragraph 3.B.(1) and 3.C.(1) of RR Alert NMSB Trent 1000 72-AK130.
(4) Repeat the on-wing inspection of the IPC stage 2 rotor blades and IPC shaft stage 2 dovetail posts in accordance with paragraphs 3.B.(1) and 3.C.(1) of RR Alert NMSB Trent 1000 72-AK130, Revision 2, dated July 26, 2018, and within the compliance times specified in Table 1 of RR Alert NMSB Trent 1000 72-AK130.
(5) For the on-wing inspection required by paragraphs (g)(1) through (4) of this AD, provided the stated thresholds and intervals are not exceeded, you may substitute:
(i) An in-shop inspection of an engine or module performed in accordance with the instructions of paragraphs 3.A.2, 3.B.2, and 3.C.2 of the RR Alert NMSB Trent 1000 72-AK130, Revision 2, dated July 26, 2018; or
(ii) an in-shop piece part inspection during refurbishment in accordance with the Accomplishment Instructions, paragraphs 3.B.(2)(f)(vi), 3.B.(2)(g)(v), and 3.B.(3)(d)(iii) of RR Trent 1000 NMSB 72-K132, dated June 29, 2018.
(6) If any IPC stage 1 rotor blade, IPC stage 2 rotor blade, or an IPC shaft stage 2 dovetail post is found cracked during any inspection required by this AD, remove the part from service and replace the part with a part eligible for installation before further flight.
As of the effective date of this AD, before the next flight after each occurrence where engine operation in asymmetric power conditions was sustained for more than 30 minutes at less than 25,000 feet, either resulting from engine power reduction, or from engine in-flight shut-down (IFSD), inspect the IPC stage 1 rotor blades, stage 2 rotor blades and IPC shaft stage 2 dovetail posts in accordance with the paragraphs 3.A.(1), 3.B.(1), and 3.C.(1) of the RR Alert NMSB Trent1000 72-AK130, Revision 2, dated July 26, 2018 on the engine that did not experience the power reduction or IFSD installed on the airplane.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Engines
